[FIX] base: correctly handle non-normalised domains in SSF

Turns out I'd kinda skipped that bit.

Fixes #22711

odoo/addons/test_testing_utilities/menu.xml

@@ -91,4 +91,17 @@
             </form>
         </field>
     </record>
+
+    <record id="non_normalized_attrs" model="ir.ui.view">
+        <field name="name">Non Normalised Domains</field>
+        <field name="model">test_testing_utilities.a</field>
+        <field name="arch" type="xml">
+            <form>
+                <field name="f1"/>
+                <field name="f2" attrs="{'readonly': [['f1', '=', 63], ['f3', '=', 5]]}"/>
+                <field name="f3"/>
+                <field name="f4"/>
+            </form>
+        </field>
+    </record>
 </odoo>

odoo/addons/test_testing_utilities/tests/test_form_impl.py

@@ -65,6 +65,19 @@ class TestBasic(TransactionCase):
         with self.assertRaises(AssertionError):
             f.f2 = 42
 
+    def test_attrs(self):
+        """ Checks that attrs/modifiers with non-normalized domains work
+        """
+        f = Form(self.env['test_testing_utilities.a'], view='test_testing_utilities.non_normalized_attrs')
+
+        # not readonly yet, should work
+        f.f2 = 5
+        # make f2 readonly
+        f.f1 = 63
+        f.f3 = 5
+        with self.assertRaises(AssertionError):
+            f.f2 = 6
+
 class TestM2O(TransactionCase):
     def test_default_and_onchange(self):
         """ Checks defaults & onchanges impacting m2o fields

odoo/tests/common.py

@@ -28,6 +28,7 @@ from decorator import decorator
 from lxml import etree, html
 
 from odoo.models import BaseModel
+from odoo.osv.expression import normalize_domain
 from odoo.tools import pycompat
 from odoo.tools.safe_eval import safe_eval
 
@@ -758,7 +759,10 @@ class Form(object):
         contexts = fvg['contexts'] = {}
         for f in etree.fromstring(fvg['arch']).iter('field'):
             fname = f.get('name')
-            modifiers[fname] = json.loads(f.get('modifiers', '{}'))
+            modifiers[fname] = {
+                modifier: domain if isinstance(domain, bool) else normalize_domain(domain)
+                for modifier, domain in json.loads(f.get('modifiers', '{}')).items()
+            }
             ctx = f.get('context')
             if ctx:
                 contexts[fname] = ctx